Then why do people think it is helpful to sleep after drinking? This is because the initial reaction of alcohol is to induce sleep, but it is followed by frequent awakening and intermittent sleep. The role of alcohol is to make people sleepy first. On the surface, it helps sleep, but in fact it interferes with sleep. In the middle of the night, after the effect of alcohol gradually disappears, it will cause insomnia and dreaminess, especially the overall sleep quality decline. Therefore, drinking alcohol before going to bed can not improve sleep, but will make sleep shallow and intermittent, which is not conducive to sleep.
Alcohol is a neurophilic substance, the main component of which is ethanol. Alcohol that enters the human body through drinking cannot be digested and absorbed, so it will enter the brain with the blood. In the brain, ethanol can destroy nerve cells, stimulate the brain and make nerve cells excited for a long time. You know, the main reason why people can fall asleep is that brain cells enter a state of inhibition, so drinking will affect sleep and cause insomnia.
In addition, the decomposition of alcohol produces acetaldehyde, which is a harmful toxin. If you fall asleep immediately after drinking, acetaldehyde will affect the circulation in the body and lead to dehydration. Then people will be thirsty, and it is difficult to fall asleep when they often get up at night. So on the surface, drinking helps sleep, but in fact it affects sleep.
If you don't sleep well, you can't drink alcohol for 5 hours before going to bed. If you sleep normally, drinking some red wine and the like will not affect your sleep, which is related to your physique.